Debugging Commands - Lenovo RackSwitch G8264 Command Reference Manual

Debugging Commands

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G8264 Command Reference for ENOS 8.4
The Miscellaneous Debug Commands display trace buffer information about
events that can be helpful in understanding switch operation. You can view the
following information using the debug commands:
 Events traced by the Management Processor (MP)
 Events traced to a buffer area when a reboot occurs
If the switch reboots for any reason, the MP trace buffer is saved into the snap trace
buffer area. The output from these commands can be interpreted by Technical
Support personnel.
Table 404.
Miscellaneous Debug Options
Command Syntax and Usage
debug debug­flags
This command sets the flags that are used for debugging purposes.
Command mode: Privileged EXEC
debug dumpbt
Displays the backtrace log.
Command mode: Privileged EXEC
[no] debug lacp packet {receive|transmit|both} port
<port alias or number>
Enables or disables debugging for Link Aggregation Control Protocol (LACP)
packets on selected ports running LACP.
The following parameters are available:
receive filters only LACP packets received

transmit filters only LACP packets sent

both filters LACP packets either sent or received

port filters LACP packets sent/received on specific ports

By default, LACP debugging is disabled.
Command mode: Privileged EXEC
debug mp­snap
Displays the Management Processor snap (or post‐mortem) trace buffer. This
buffer contains information traced at the time that a reboot occurred.
Command mode: Privileged EXEC
debug mp­trace
Displays the Management Processor trace buffer. Header information similar
to the following is shown:
MP trace buffer at 13:28:15 Fri May 25, 2001; mask:
0x2ffdf748
The buffer information is displayed after the header.
Command mode: Privileged EXEC